- Use: For road and bridge construction, factory building, prefabricated structure, mechanical engineering,
- Steel mark of Russia: CT3, ... standard: GOST 380-88.
- Steel mark of Japan: SS400, ..... according to standard: JIS G 3101, SB410, 3010.
- Steel mark of China: SS400, Q235B .... standard: JIS G3101, SB410, 3010.
- American steel grade: A36, ... standard ATSM A36, ASTM A572 Gr50,
